Oxygen Quiz

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What is the primary cause of anoxia?

Exposure to low temperatures

Lack of oxygen (correct)

Release of carbon dioxide bubbles in the blood

High air pressure

When does the dilutor demand regulator function?

Continuously, regardless of user's actions

When the user inhales (correct)

When the user exhales

Only when the supply valve is closed

Which method is recommended for measuring moisture in an oxygen system?

Employing a hygrometer that measures dew point (correct)

Applying litmus paper to test for acidity

Using a glass plate to detect condensation

Visually inspecting for water droplets

How are oxygen cylinder test dates typically indicated?

Painted in white on the cylinder (B) Signup and view all the answers

If an oxygen system pressure has leaked away after charging, which component is most likely the cause?

The breathing regulator (A) Signup and view all the answers

Where would you most likely find the cause of a leak in an oxygen system?

A loose connection or fitting (D) Signup and view all the answers

How often should oxygen bottles be tested and inspected?

every 4 years (D) Signup and view all the answers

What is the typical capacity of an oxygen bottle?

80 - 2250 litres (D) Signup and view all the answers

Where are the oxygen bottle test and working pressures typically found?

stamped on the neck ring (C) Signup and view all the answers

What is the recommended position for the oxygen bottle on/off valve after installation?

wire locked in the 'on' position (B) Signup and view all the answers

How is dangerous pressure rise in oxygen cylinders relieved?

by a bursting disc (A) Signup and view all the answers

What pressure range should oxygen cylinders be left at to avoid condensation forming?

200/300 p.s.i. (C) Signup and view all the answers

What determines the material used for oxygen pipelines?

The pressure used in the system (D) Signup and view all the answers

How is the direction of flow in an oxygen non-return valve indicated?

by an arrow (A) Signup and view all the answers

What material are oxygen filters typically made of?

sintered bronze (A) Signup and view all the answers

What is used to indicate satisfactory operation of the oxygen system?

flow indicators (C) Signup and view all the answers

What happens when an aircraft suddenly drops pressure at 14,000 ft?

Masks drop automatically (D) Signup and view all the answers

How is an over-pressurized oxygen cylinder indicated?

A green rupturing disc (C) Signup and view all the answers

What is the typical life span of an aircraft oxygen cylinder?

5 years (A) Signup and view all the answers

How is a discharged chemical oxygen generator indicated?

A change in color (C) Signup and view all the answers

What is the minimum supply duration of a chemical oxygen generator?

15 minutes (D) Signup and view all the answers

How should the oxygen line service valve be secured?

Wire locked open (A) Signup and view all the answers

Aircraft capable of flying above what altitude must carry oxygen equipment?

10,000 ft (C) Signup and view all the answers

What is the approximate critical altitude for oxygen requirement?

25,000 ft (A) Signup and view all the answers

If oxygen is not being supplied in normal flight conditions, what should the cabin altitude be?

At or below 8,000 ft (A) Signup and view all the answers

Above what altitude must pressure breathing systems be used?

Above 40,000 ft (C) Signup and view all the answers

At what altitude do the oxygen masks deploy automatically?

3042 meters (D) Signup and view all the answers

What are oxygen cylinders normally fitted with?

Pressure and quantity gauges (D) Signup and view all the answers

When does a demand regulator in a portable oxygen bottle open?

When breathing (C) Signup and view all the answers

What color are American-made crew oxygen cylinders?

Green with a RH thread (C) Signup and view all the answers

Which connector has a left-hand thread in an oxygen system?

O2 (D) Signup and view all the answers

'What is the principle of an O2 generator?'

Sodium chlorate and iron mixed by an electronic detonator (A) Signup and view all the answers

What pressure are oxygen cylinders usually pressurized to?

1800 PSI (C) Signup and view all the answers

Once charged, what should be done to oxygen storage cylinders?

Turned on and safety wire-locked (D) Signup and view all the answers

Where are the left-handed threads found in an oxygen system?

Charging connection (B) Signup and view all the answers

How does a portable O2 diluter demand valve work?

The user breathes in (D) Signup and view all the answers

What type of material should be avoided when working in the vicinity of an oxygen system?

Traces of oils or greases (C) Signup and view all the answers

What is the operating temperature of a chemical oxygen generator?

$45^\circ$C at 10 psi for 15 minutes (D) Signup and view all the answers

When charging an oxygen bottle in-situ, what should be done?

Charge in accordance with the temperature/pressure graph (A) Signup and view all the answers

What does the gauge fitted to an oxygen bottle indicate?

Pressure (C) Signup and view all the answers

How should thread lubrication tape be applied in an oxygen system?

Applied to all except the first two threads and not more than 3 complete wraps of tape (B) Signup and view all the answers

How is an expended chemical oxygen generator indicated?

By a change in color of heat sensitive paint (B) Signup and view all the answers